Removal of Existing Polycarbonate Sheets:Carefully remove the damaged polycarbonate sheets, ensuring minimal disruption to the AHU system and surrounding infrastructurer to Engineer incharge as per the require locations as directied by OIC-ES
2
Steelworkinbuiltuptubular(round,squareorrectangularhollow tubesetc.)trussesetc.,includingcutting,hoisting,fixinginposition andapplyinga priming coatof approvedsteel primer, including welding and bolted with special shaped washers etc. complete.Hot finished welded type tubes
3
Providing and applying two coats of synthetic enamel paint Asian make (Apcolite) / Goodlass Nerolac (1st quality) to doors, windows, ventilators, grills etc. including thoroughly scrapping the surface with sand papers, filling up crevices and levelling with putty if necessary to obtain smooth surface etc. complete as directed to the entire satisfaction of engineer in charge.Same as above with one coat of Zinc Chromate primer to metal surface.
4
CORRUGATEDG.I./PPGI SHEET:Providing & fixing corrugated sheet/GI /PPGI sheet closefitted serrated adjustable corrugated /semicorrugatedsheets including overlaps, ridges if requiredincludingsupplying and fixing necessary J or L hooks bolts, nutsas washer and bitumen was hers withscaffolding etc.complete all as directed by theEngineer-in-Charge.1.00 mm thick with zinc coating not less than 275 gm/m²
5
Providingandfixingprecoatedgalvanisedsteelsheet roofing accessories 0.50 mm (+0.05 %) total coated thickness, Zinc coating 120 gramspersqmasperIS:277,in240mpasteelgrade,5-7microns epoxyprimeronbothsideofthesheetandpolyestertopcoat15-18 microns using self drilling/ self tapping screws complete :Ridges plain (500 - 600mm)
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